Google ADK

pip install grantex-adk

pip install google-adk

from grantex_adk import create_grantex_tool
from google.adk import Agent

read_calendar = create_grantex_tool(
    name="read_calendar",
    description="Read upcoming calendar events",
    grant_token=grant_token,       # JWT from Grantex authorization flow
    required_scope="calendar:read",
    func=get_calendar_events,
)

# Google ADK uses plain functions as tools
agent = Agent(
    model="gemini-2.0-flash",
    name="assistant",
    tools=[read_calendar],
)